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CVE-2021-47336 (GCVE-0-2021-47336)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2026-05-11 13:52
VLAI
Title
smackfs: restrict bytes count in smk_set_cipso()
Summary
In the Linux kernel, the following vulnerability has been resolved: smackfs: restrict bytes count in smk_set_cipso() Oops, I failed to update subject line. From 07571157c91b98ce1a4aa70967531e64b78e8346 Mon Sep 17 00:00:00 2001 Date: Mon, 12 Apr 2021 22:25:06 +0900 Subject: [PATCH] smackfs: restrict bytes count in smk_set_cipso() Commit 7ef4c19d245f3dc2 ("smackfs: restrict bytes count in smackfs write functions") missed that count > SMK_CIPSOMAX check applies to only format == SMK_FIXED24_FMT case.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-21 18:44 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 5f9880403e6b71d56924748ba331daf836243fca (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2 (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < cbd87ba6a13891acf6180783f8234a8b7a3e3d4d (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 135122f174c357b7a3e58f40fa5792156c5e93e6 (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 3780348c1a0e14ffefcaf1fc521f815bcaac94b0 (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 8f5c773a2871cf446e3f36b2834fb25bbb28512b (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 258fd821f69378453c071b9dd767b298810fc766 (git)
Affected: f7112e6c9abf1c70f001dcf097c1d6e218a93f5c , < 49ec114a6e62d8d320037ce71c1aaf9650b3cafd (git)
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Linux Linux Affected: 3.5
Unaffected: 0 , < 3.5 (semver)
Unaffected: 4.9.276 , ≤ 4.9.* (semver)
Unaffected: 4.14.240 , ≤ 4.14.* (semver)
Unaffected: 4.19.198 , ≤ 4.19.* (semver)
Unaffected: 5.4.133 , ≤ 5.4.* (semver)
Unaffected: 5.10.51 , ≤ 5.10.* (semver)
Unaffected: 5.12.18 , ≤ 5.12.* (semver)
Unaffected: 5.13.3 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T11:44:27+00:00",
      "cve": "CVE-2021-47336",
      "id": "CVE-2021-47336",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: smackfs: restrict bytes count in smk_set_cipso()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47336.json",
      "version": "3"
    },
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.